This document describes a 16-Kbit serial SPI bus EEPROM product in full production. It features compatibility with the Serial Peripheral Interface (SPI) bus, including a 16 Kb EEPROM memory array, 32-byte page size, write byte and page write within 5 ms, write protect options for quarter, half, or whole memory array, 10 MHz high-speed clock, single supply voltage range of 4.5 V to 5.5 V, operating temperature range of -40°C to +85°C, more than 1 million write cycles, more than 40-year data retention, and RoHS compliant and halogen-free packaging.